用单词的适当形式填空。

1.  This is______  (interest)  film.  People are______ (interest)  in it.

2.  This book is ______  (necessary) than that one.

3.  It is necessary for us______  (exercise).

4. When you cross the street, be ______  (care),

5.  You are a good student, so you should read books ______  (care).

6.  When I ______  (read) the book, I got some ______ (information) about the sun.